Change WordPress Password Hint Text

change-wp-password-hint.php

<?php
/**
 * Change the WordPress password hint text. Note: This won't change any password checking functionality.
 * Add this code to your child theme functions.php or via a custom plugin.
 */

function yh_change_password_hint( $hint_text ) {
  return "Please use a strong password. Passwords that consist of special characters (&#%!@), upper case/lower case characters and numbers are considered strong.";
}
add_filter( 'password_hint', 'yh_change_password_hint', 10, 1 );